Lubricating spring-bolt.



ZERK. LUBRICATING SPRING BOLT. APPLXGATION FILED am:` 16. m13.

1,066,970. Patented July, 1913 gular portion 17. on the bolt, and hasdiametrically oppositeJ humps 40, made by pressing them into the shapeshown. These humps engage suitable grooves in the shackle 5, two of suchgrooves being shown at 42 in Fig. 3.

A modification of the angular shoulder 17 upon the bolt head is showninFigs. and 7 in which the shoulder 45 is rounded, but has two sidesflattened, as at 46 and 47. The A raised or thickened annular portion ofthe.-v

usual shackle is cut away to provide a surface 48 against which 'one ofthe surfaces 47 may lie to prevent the bolt turning.

It will be seen from the foregoing description that I have a simpleandneat device which is dust proof and easily accessible for purposes ofrefilling,'etc.,ewhile the bolt is of such construction that it ischeap' to manufacture and may be readily driven into place withoutin anyWay injuring it or impairing its use.

Having thus described my invention, what I claim is:

l. The combination", with a bolt and an openended cap, of a flangecoupling for securing the cap to the head of the bolt, and a movableplunger within the cap.

2. The .combination of a bolt having a head and an opening through thehead and the body ofV the bolt to the surface of the bolt shank, a caphaving an open-ended body, a flange coupling for securing the body tothe head, av plunger within the body, and means for moving said plunger.

3. The combination of a bolt having a shank' and an enlarged headexternally threaded, a cap'bearing against the head and externallyflanged, and an .internally flanged nut screwing onto the head andengaging the flange of the cap.

4. The combination of a bolt having a shank and an enlarged head, aportion of which is beveled forming an annular beveled surface, a caphaving a flange fitting against said beveled surface, and a' nutscrewing onto the head and having an inward flange forvengagin'g theflange on the rap for holding the cap in place.

5. The combination of a bolt having a shank and an enlarged headexternally threaded, an opening through the head and body of the boltleading to the side surface flange engaging the flange on the` cup forof the bolt, said bolthead having a substantially dat outer face and abeveled annular portion between the outer face and threads, a cap havinganopen end, and an outward inclined annular flange at its edge, and anut adapted to screw onto said head and havingv an inward inclinedannular flange adapted-to overhang" the flange of-thecap and clamp itvto the bolt head.

6. The combination of a bolt having-a shank, a rigid head and an angularshoulder on the inner fac'e of the head, an openended cap, and a flangecoupling for securing the same to the head. Y

7. The com'binationof a bolt having a head rigid therewith, said headhaving a screw threaded exterior, a cap, a nut by which the cap is heldon the head, an angular shoulder o n the bolt adjacent to the head, andmeans forflo'ckingfthe shoulder' to the shackle.

8. The combination, with a' spring, of a bolt occupying an eye in thespring and having a cavity leading from-theen`d to the side surface tovlubricate the'springbearing, an

open-ended cap, and, a' flange'coupling for securing the cap to the headof the bolt.

9. The combination, with aspring, of a bolt having a shankoceupyingfthe: spring and'having an 'enlarged head beyond the side ofthe spring and externally threaded, a cap bearing against the vheadl andexternally flanged, and an internally flanged nut screwing onto the headand engaging the flange of the cap.

l0. The combination of a spring bolt having a shank and ahead, a beveledseat o n the head, a cap having a flaring flange fitting over'such""seat,Qtherev being screw threads on the outside of the head, anda nut screwing on such threads having a holding it onto said beveledseat, there being an opening through the head of the bolt to the sidethereof, and means for holding the bolt against turning.

AIn testimony whereof, I hereunto allix my signature in the presence oftwo witnesses.,-I

